Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tormod Salvesen0
Date of Patent
March 13, 2012
Patent Application Number
12064817
Date Filed
September 27, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An impeller device (10) for centrifugal fans (1), having comprising a center wheel (40), at least one side disc (20, 30) and fan blades (50). The center wheel (40) and the side disc(s) (20, 30) are equipped with attachment devices (24, 44) for attaching the blades and the center wheel's (40) attachment device (44) comprises a protrusion (45) extending substantially in the center wheel's radial direction and arranged to abut against the second side end (54) in the fan blades (50).
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